I know for a fact that an amateur cyclist in the UK was banned for 2 years for testing positive for EPO after taking part in a race. I believe he had been deliberately targeted for testing because of suspicions about his performance.

The race organiser does not pay for the testing directly. British Cycling takes a small levy for every rider taking part in a race and I imagine this goes towards paying for the random testing.

The UK anti-doping website has a list of all current and historical bans for drug test rule violations covering a wide range of sports:

https://www.ukad.org.uk/anti-doping-rule-violations/current-...